Do acidic conditions deactivate amylase?

A plant cell must have

Which organelle gives plants their green color and is the site of photosynthesis? ribosomes nucleus mitochondria chloroplasts

A red supergiant star is ten times more massive than the sun. What would be the likely impact on the motion of Earth if the sun were replaced by this red supergiant? A year on Earth would be shorter because Earth's orbital speed would increase.

Which of the following activities are performed by computer programmers? Choose all that apply.

What experiment could be designed to test whether the two populations are one species

Desert animals, such as the kangaroo rat, need to conserve water. These animals have larger kidneys than do animals that live in moist environments and thus need not conserve water.

What is the function of a nucleus in a cell the nucleus A. controlls the cells activity B. the nucleus identifies the cell as belonging to a plant C. the nucleus determines what substances enter and leave the cell D.

Which best describes emerging scientific ideas? a. never been tested b. unpublished c. supported by most, but not all, scientists d. not studied by many scientists

A sonic boom is produced by a jet. What can you determine about the jet's motion? a) It is near a mountain where echos can be produced b) Its engines produced backfire c) It is increasing in altitude d) It is traveling faster than the speed of

What happens when someone dies?